Packing for rotary engines.



Patented Feb. 16, 1909 FIGJ- E18 ATTORNEY rn: mural: rz-ri us ca, WASHINGTON. a c

UNITED STATES PATENT OFFICE.

MARCUS H. HULINGS, OF ALLEGHENY, PENNSYLVANIA; SALLIE PAGE IIULINGS, ADMIN- ISTRATRIX OF SAID MARCUS H. HULINGS,

HULINGS.

DECEASED, ASSIGNOJ TO WILLIS J.

Specification of Letters Patent.

Patented Feb. 16, 1909.

Original application filed December 31, 1907, Serial No. 408,762. Divided and this application filed May 25, 1908. Serial No. 434,777.

To all whom it may concern:

Be it known that I, MARoUs H. HULINes, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Packings for Rotary Engines, of which the following is a specification.

My invention relates to packing and particularly to packings adapted to rotary engines and has for its object to provide a means of packing gas engines of the rotary type and similar machines where a packing is required which will provide a tight and uniform joint between the fixed and rotary members and especially adapted to provide an even frictional contact at all points around the periphery of the rotating members.

A further object is to provide a which will be readily lubricated.

Another object is to provide a packing of this description which will withstand a high de ree of heat.

11 the drawings which form a part of this specification Fi ure 1 represents the casing 0 a rotary engine, a portion of the casing being broken away to expose the lower half of the interior thereof and is divided into three sections to resemble the casing of a rotary gas engine for which I have made ap lication for Letters Patent, Serial Num er 408,762, filed December 31st, 1907, and of which this application is a division. Fig. 2 is a side view of my improved packing and shows the relative )osition of the tightening means therefor. l ig. 3 is a view in perspective of a fragment of the packings and a portion of the wedge-shaped tightening ring and lugs. Fig. 4 is an end view of a portion of the acking ringsand. the tightening rings at the ugs.

Referring again to the drawings for a de tailed description of my invention l'represents a rotary engine casing composed of the sections 1 1 and l c joined together to form with a rotatable cylinder a rotary gas engine, the rotatable member being removed for the sake of clearness. Flanges 22 are provided at the ends of said sections having a beveled edge so that the adjacent flanges or a flange and end plate form a groove or recess around the inner circumference of the casing to receive the packing.

3 represents ackin rin s of triangular cross section an may e eit er endless or if packing desired may be split to allow for expansion. It will be seen that the inner face of these packing rings presents an even surface to the periphery of the rotatable cylinder which is designed to revolve therein. The remainso ing two sides of the packing rings, having in mind the triangular cross section of the packing ring at any point, taper to an apex. Tightenin rings composed preferably of two semi-circu ar halves 4-4 are provided with lugs 5-5 having bolt holes 66 therein. These tightening rings are wedge shaped in cross section and are adapted to be inserted in the groove formed by the flan e 2 and the adjacent casing or by adjacent angcs 22. The lugs 5-5 extend through and out of the casing and are provided with bolts 66 connecting complementary pairs of lugs. A slight space is allowed between adjacent lugs for the purpose of drawing up the semi-circular halves of the tightening ring and s iral springs 7 are placed on the bolts 6 and mid by the nuts 8. It will be seen that as the two halves of the tightening ring 4 are drawn together by means of the bolts 6 and the ten sion of the s rings 7 the wedge shaped cross section of t iese ti htening rings tends to Wedge out the pac in rings 3 uniformly throughout their entire length and force said pac 'ng rings into tight contact with the adjacent revolublc member.

At the space between the lugs where the semi-circular halves of the tightening rings approach each other lubricant may be injected if desired as will be apparent. It will be seen from the drawings that the tightening rings do not extend entirel r to the inner face of the packing rings and this channel or groove 9 so formed may be filled with lubricant.

The purpose of the spring 7 on the bolts 6 is to allow for resiliency in the packing. The nuts 8 being drawn up to the desired tension and the springs con'ipensating for any variation, such as expansion, contraction and vibration.

In Fi 1 of the drawing the adaptation to use 0 my invention is shown both where the paokings and the tightening rings are disposed between adjacent flanges of two connected sections and also between the flange of a section and th adjacent casing or end plate 10 of the engine.

While I have described this novel packing as applied to rotary gas engines it will be evident to those skilled in the art that there l are many uses for same.

Having thus fully described my invention I claim as new and desire to protect by Letters Patent of the United States:

1. In a packing for rotating members, the combination with a groove having a ta )ered cross section, of a packing ring triangu ar in cross section, a Wedge shaped tightening ring provided with lugs, and means for drawing the lug ends of said ring together to Wedge out the packing ring, substantially as described.

2. In a packing for rotating members, the combination of a beveled edge on one of the parts, a packing triangular in cross section arranged a ainst said beveled edge, a Wedge shaped tig tening ring cooperatingly arranged with relation to said packing, and means contracting said tightening ring.

3. In a packing for rotary engines, the combination with a groove having beveled edges, of packing rings triangular in cross section, a tightening rin comprising semicircular halves of wedge- Iiaped cross-section and provided With end lugs, and resilient means for drawing the lug ends of said ring together to wedge out the packing rings and allow for varying pressure a ainst said packing, substantially as descri ed.

In testimony whereof I have aflixed my signature in presence of two Witnesses.

MARCUS H. HULIN GS.

Witnesses l A. H. KAUFMAN, M. OHILLEEN. 

